Viewing the first picture in the “full size” mode revealed miniscule scaber-like structures within the reticulation mesh and perhaps even covering the reticualtion itself, giving the dark ridges a fuzzy appearance. Also, the reticulation disappears at the lower portion of the stipe, wherein the texture can be visually described as scabrous-fibrillose (it’s certaily not glabrous). So this might be a Leccinum species after all…

I am yet to find a full description and pics of this mushroom online. According to Smith & Thiers (page 214; http://quod.lib.umich.edu/...), only the pileus has a “alveolate-reticulate” appearance — hence the stipe of this species is presumed to be the same as in the generic L. albellum, i.e. finely scabrous and NOT reticulate. Martin’s specimen has a distinctly reticulate pattern.

I was just checking to see if you were paying attention! The reticulation is a dead give away that this cannot be Leccinum. With nearly 3000 photos in the last 30 days, I may be moving too fast. Thanks again.